To enable saving images to the device you can follow the below steps:
1.) Tap on the menu button (3 lines, top left-hand side).
2.) Tap on Settings.
3.) Tap on the square on the right of "Save to Gallery".
4.) On the Android device tap on Settings (cog icon).
5.) Scroll down and tap Apps.
6.) Look for the Palace App and tap it.
7.) Scroll down and tap on Permissions.
8.) Tap the slider bar on the right-hand side in line with Storage.
(Make sure Camera, Location, Microphone is also enabled)